Bag is not bad but wrong information Dimensions

I had specially chosen me a lightweight bag for traveling, if you take not want to take everything and either hang the camera around the shoulder or carried in the bicycle or hiking backpack. As far as the bag is fine. The camera can be pulled out quickly and by an additional holder, the bag is attached to the camera strap, so it can not fall. The neoprene protects the camera enough and because the camera belt is used, the handling over other Colt bags is very simple. However, the bags protected against dust or moisture does not, but that was not my request.
Unfortunately I can not use the bag as the measurements do not reflect reality in the description. I had my camera (Canon EOS 6D with 24-105mm lens) previously measured precisely and according to the manufacturer it would have to fit into the pocket. But it does not, unfortunately. The camera is back out approximately 0.5 cm from the bag and thus can no longer be placed on the entire surface of the Velcro flap. You shall be liable only with a small area and therefore is the always carry on.
Deduction of points there for the wrong dimensions in the specification and thus unnecessary conversion hassles.